Cooling confluence module, battery, battery pack and electric equipment

Abstract

The utility model provides a cooling confluence module, a battery, a battery pack and electric equipment, the cooling confluence module is used for the battery, the battery comprises a plurality of battery cell groups, the cooling confluence module is suitable for being electrically connected with the plurality of battery cell groups, and the cooling confluence module is also suitable for accommodating a cooling medium to cool the plurality of battery cell groups.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to cooling convergence module, battery, battery pack and electric equipment. BACKGROUND

[0002] In the related art, the battery for the energy storage battery pack is cooled by the bottom liquid cooling plate, and the top of the battery also needs to be provided with a busbar for series connection or parallel connection of the battery cells, wherein the liquid cooling plate and the busbar are separately arranged and occupy the bottom and top space of the energy storage battery respectively, thereby being not conducive to improving the energy density of the energy storage battery pack. SUMMARY

[0003] The embodiments of the utility model provide a kind of cooling convergence module, battery, battery pack and electric equipment, and the technical problem that the liquid cooling plate and busbar of battery occupy more space of energy storage battery pack can be improved.

[0004] In the first aspect, the embodiments of the utility model provide a kind of cooling convergence module, for battery, the battery includes multiple battery cell groups, the cooling convergence module is adapted to electrically connect multiple battery cell groups, and the cooling convergence module is also adapted to accommodate cooling medium to cool multiple battery cell groups.

[0005] In an embodiment, the cooling convergence module further includes multiple cooling convergence components;Each battery cell group includes multiple battery cells;Wherein, each cooling convergence component is adapted to series connection multiple battery cells of corresponding battery cell group, and adapted to accommodate cooling medium to cool multiple battery cells of the battery cell group.

[0006] In an embodiment, each cooling convergence component includes two cooling convergence pipes;Wherein, two cooling convergence pipes are adapted to series connection multiple battery cells of the battery cell group, and adapted to accommodate cooling medium to cool multiple battery cells of the battery cell group.

[0007] In an embodiment, each cooling convergence pipe includes multiple branch pipes that are communicated with each other;Wherein, multiple branch pipes of two cooling convergence pipes are adapted to series connection multiple battery cells of corresponding battery cell group, and each branch pipe is provided with cavity to accommodate cooling medium.

[0008] In an embodiment, two cooling convergence pipes include first cooling convergence pipe and second cooling convergence pipe;Wherein, each branch pipe of the first cooling convergence pipe is series connected with a branch pipe of the second cooling convergence pipe by a battery cell, and each branch pipe of the second cooling convergence pipe is series connected with a branch pipe of the first cooling convergence pipe by a battery cell, so that multiple battery cells of the battery cell group are series connected.

[0009] In an embodiment, the branch pipe is metal pipe.

[0010] In an embodiment, each of the cooling manifold further comprises a plurality of insulation seals, each of the insulation seals is sealed and connected between two adjacent ones of the sub-pipes and insulates the two adjacent ones of the sub-pipes from each other.

[0011] In an embodiment, the insulation seal is a silica gel insulation seal.

[0012] In an embodiment, the cooling manifold module further comprises a plurality of connectors, each of the connectors is connected to two adjacent ones of the cooling manifold assemblies to connect the two adjacent ones of the cell groups in series.

[0013] In an embodiment, the cooling manifold module further comprises at least one manifold end plate, each of the manifold end plates is adapted to communicate with the plurality of the cooling manifold assemblies to circulate the cooling medium.

[0014] In an embodiment, at least one of the manifold end plates is provided with an inlet and an outlet, the inlet is adapted to allow the cooling medium to flow in, and the outlet is adapted to allow the cooling medium to flow out.

[0015] In an embodiment, the cooling manifold module further comprises at least one fixing band, each of the fixing bands surrounds an outer circumferential side of at least one of the end plates and at least one of the cooling manifold assemblies to connect the at least one of the end plates and the at least one of the cooling manifold assemblies.

[0016] In a second aspect, embodiments of the utility model provide a battery, the battery comprises a plurality of cell groups and the cooling manifold module, the cooling manifold module is arranged at an end surface or a side surface of the plurality of cell groups.

[0017] In an embodiment, the cell group comprises a plurality of cells, the cell comprises a pole, and the cooling manifold module is connected to the pole.

[0018] In a third aspect, embodiments of the utility model provide a battery pack, the energy storage battery pack comprises a box body and a plurality of batteries arranged in the box body, and the battery comprises the battery.

[0019] In a fourth aspect, embodiments of the utility model provide a power utilization device, and the power utilization device comprises the battery pack.

[0020] The embodiments of the utility model have the beneficial effects that:

[0021] In the embodiment of the utility model, through the cooling plate of cooling multiple electric core groups and the busbar of electrically connecting multiple electric core groups are integrated as cooling bus module, the cooling bus module can reduce the internal space of battery pack relative to the cooling plate and bus plate of split setting, thereby being favorable for improving the energy density of battery pack. Further, through the cooling plate and bus bar are integrated as cooling bus module, thereby simplifying the overall structure of battery, improving the assembly efficiency of battery. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment description will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0023] Figure 1 It is the perspective view of battery provided by the embodiment of the utility model;

[0024] Figure 2 It is the perspective view of battery provided by the embodiment of the utility model;

[0025] Figure 3 It is the perspective view of battery provided by the embodiment of the utility model;

[0026] Figure 4 It is the perspective view of battery provided by the embodiment of the utility model;

[0027] Figure 5 It is the perspective view of battery provided by the embodiment of the utility model;

[0028] Figure 6 It is the perspective view of battery provided by the embodiment of the utility model;

[0029] Figure 7 It is the perspective view of battery provided by the embodiment of the utility model;

[0030] Figure 8 It is the perspective view of battery provided by the embodiment of the utility model;

[0031] Figure 9 It is the perspective view of battery provided by the embodiment of the utility model;

[0032] BRIEF DESCRIPTION OF DRAWINGS

[0033] 10, cell group; 1, cell; 11, pole; 12, positive pole; 13, negative pole; 14, top end face; 15, bottom end face; 16, side face; 17, first cell; 18, second cell;

[0034] 20, cooling busbar module;

[0035] 2, cooling busbar assembly; 21, sub-pipe; 211, first sub-pipe; 212, second sub-pipe; 22, connecting part; 221, connecting groove; 222, connecting protrusion; 23, cooling busbar pipe; 231, first cooling busbar pipe; 232, second cooling busbar pipe; 24, cooling cavity;

[0036] 3, insulating sealing member; 31, main body part; 32, first sealing part; 33, second sealing part; 34, through hole; 35, sealing groove; 36, sealing protrusion;

[0037] 4, busbar end plate; 41, end plate part; 42, interface part; 43, inlet; 44, outlet;

[0038] 5, fixing belt;

[0039] 6, cooling plate;

[0040] 7, connecting member; DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. In addition, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, the positional words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, and specifically refer to the drawing direction in the drawings. And "inner" and "outer" refer to the outline of the device.

[0042] In the related art, the battery for the energy storage battery pack is cooled by the bottom liquid cooling plate, and a busbar is arranged at the top of the battery to connect the cells in series or in parallel. The liquid cooling plate and the busbar are separately arranged and occupy the bottom and top space of the energy storage battery, respectively, which is not conducive to improving the energy density of the energy storage battery pack.

[0043] The embodiments of the present application provide a battery for an energy storage battery pack or a power battery pack, such as Figure 1 and Figure 2As shown, the battery includes a plurality of cell groups 10 and a cooling busbar module 20.

[0044] The cell group 10 includes a plurality of cells 1 arranged side by side along the length direction, and the plurality of cell groups 10 are arranged side by side along the width direction. The cell 1 has opposite top and bottom end faces 14 and 15, and a plurality of side faces 16 between the top and bottom end faces 14 and 15. The cell 1 includes at least one pole 11, and in a specific implementation, a positive pole 12 and a negative pole 13 are protrudingly arranged at the top end face of the cell 1, and the positive and negative poles 12 and 13 are arranged at intervals along the width direction of the cell group.

[0045] The cooling busbar module 20 is provided with a cooling cavity 24 containing a cooling medium and is arranged at the end face or side face 16 of the plurality of cell groups 10 to cool the plurality of cell groups 10, and is also used to electrically connect the plurality of cell groups 10.

[0046] By integrating the cooling plate and the busbar into the cooling busbar module 20, the cooling busbar module 20 provides the functions of cooling and busbar at the same time, and compared with the separately arranged cooling plate and busbar, the cooling busbar module 20 can reduce the occupation of the internal space of the battery pack, for example, the cooling busbar module 20 is arranged at the top end face of the plurality of cell groups 10, so that the cooling busbar module only occupies the top space of the battery and does not need to occupy the bottom space of the battery, thereby facilitating the improvement of the energy density of the energy storage battery pack. Further, by integrating the cooling plate and the busbar into the cooling busbar module, the overall structure of the battery is simplified, and the assembly efficiency of the battery is improved.

[0047] In some embodiments, continuing to refer to Figure 1 and Figure 2 As shown, the cooling busbar module 20 is located at the top end face 14 of the plurality of cell groups 10, a positive pole 12 and a negative pole 13 are protrudingly arranged at the top end face of each cell 1, the positive and negative poles 12 and 13 are arranged at intervals along the width direction of the cell group 10, and the cooling busbar module 20 is arranged to connect the positive and negative poles 12 and 13 of the adjacent two cells 1.

[0048] It can be understood that the pole 11 of the cell 1 is electrically connected to the pole piece assembly of the cell 1, and the pole 11 is made of a metal material with good heat conduction and electrical conductivity. By contacting the cooling busbar module 20 with the pole 11, on the one hand, it is beneficial to quickly conduct and dissipate heat, and on the other hand, it is beneficial to series, parallel or mixed connection of the plurality of cells 1 in the same cell group 10.

[0049] Among them, the top end face of the pole 11 is arranged as a plane, and the bottom end face of the cooling busbar module 20 is arranged as a plane, thereby facilitating the formation of stable and large-area contact between the two, and improving the heat transfer performance and electrical conductivity.

[0050] In an embodiment, referring to Figure 3 and Figure 4 As shown in the drawings, the cooling busbar module 20 comprises a plurality of cooling busbar assemblies 2, a busbar end plate 4, a fixing band 5 and a connecting piece 7.

[0051] Each cooling busbar assembly 2 corresponds to a cell group 10, and is adapted to connect a plurality of cells 1 of the same cell group 10 in series. The cooling busbar assembly 2 is provided with a cooling cavity 24 containing a cooling medium to cool the plurality of cells of the cell group 10.

[0052] In some embodiments, each cooling busbar assembly 2 comprises two cooling busbar pipes 23 adapted to connect a plurality of cells 1 of the corresponding cell group 10 in series and to contain a cooling medium to cool the plurality of cells 1 of the cell group 10.

[0053] In some embodiments, each cooling busbar assembly 2 comprises two cooling busbar pipes 23 adapted to connect a plurality of cells 1 of the corresponding cell group 10 in series and to contain a cooling medium to cool the plurality of cells 1 of the cell group 10.

[0054] Each cooling busbar pipe 23 comprises a plurality of sub-pipes 21 in communication with each other, and the plurality of sub-pipes 21 of the two cooling busbar pipes 23 are used to connect a plurality of cells 1 of the corresponding cell group 10 in series. Each sub-pipe 21 is provided with a cooling cavity 24, and the cooling cavities 24 of the plurality of sub-pipes 21 of the same cooling busbar pipe 23 are in communication, so that the cooling medium can flow from one end of the cooling busbar pipe 23 to the other end to cool the plurality of cells 1 of the cell group 10.

[0055] In a specific implementation, each cell 1 of the cell group 10 is provided with a positive electrode pole 12 and a negative electrode pole 13, the two cooling busbar pipes 23 comprise a first cooling busbar pipe 231 and a second cooling busbar pipe 232, and the plurality of cells 1 comprise adjacent first and second cells 17 and 18. The positive electrode pole 12 of the first cell 17 is connected in series with the negative electrode pole 13 of the second cell 18 through a sub-pipe 21 of the first cooling busbar pipe 231, and the negative electrode pole 13 of the first cell 17 is connected in series with the positive electrode pole 12 of the second cell 18 through a sub-pipe 21 of the second cooling busbar pipe 232. The positive electrode poles 12 and the negative electrode poles 13 of the plurality of cells 1 of the cell group 10 are connected in series through the plurality of sub-pipes 21 of the first cooling busbar pipe 231 and the plurality of sub-pipes 21 of the second cooling busbar pipe 232 to form a busbar.

[0056] The branch pipe 21 is made of metal, thus giving it electrical conductivity. In a specific implementation, the cooling manifold 23 is made of a metal material with good thermal and electrical conductivity, such as aluminum, copper, or metal composites. The cooling manifold 23 is a hollow cylindrical structure, and its bottom surface is flat to facilitate a larger contact area with the electrode post 11.

[0057] In some embodiments, the cooling manifold 23 includes a plurality of branch pipes 21 and a plurality of insulating seals 3, each insulating seal 3 being sealed between two adjacent branch pipes 21, thereby insulating the adjacent branch pipes 21 from each other. The insulating seals 3 are made of flexible silicone material.

[0058] In specific implementation, such as Figures 5 to 7 As shown, the insulating seal 3 is sealed to two adjacent branch pipes 21. The insulating seal 3 includes a main body 31 and a first sealing part 32 and a second sealing part 33 located on both sides of the main body 31. The two adjacent branch pipes 21 include a first branch pipe 211 and a second branch pipe 212. The first sealing part 32 is connected to the first branch pipe 211, and the second sealing part 33 is connected to the second branch pipe 212. The insulating seal 3 also includes a through hole 34, which penetrates the main body 31, the first sealing part 32, and the second sealing part 33. The through hole 34 connects the cooling chamber 24 of the first branch pipe 211 and the cooling chamber 24 of the second branch pipe 212, thereby connecting the cooling chambers 24 of two adjacent branches 21 of the cooling manifold 23. The multiple insulating seals 3 are configured to connect the cooling chambers 24 of the multiple branches 21, so that the cooling medium flows from one end of the cooling manifold 23 to the other end of the cooling manifold 23 to provide cooling for the multiple cells 1 of the same cell group 10. At the same time, the multiple cells 1 of the same cell group 10 are connected in series through the multiple branches 21 to merge the current.

[0059] Each branch pipe 21 has a connecting portion 22 at both ends, and a first sealing portion 32 and a second sealing portion 33 are inserted into the connecting portion 22. Specifically, the first sealing portion 32 and the second sealing portion 33 each include a sealing groove 35 and a sealing protrusion 36. The sealing groove 35 is arranged around the through hole 34, and the sealing protrusion 36 is arranged around the sealing groove 35. The sealing groove 35 is recessed relative to the main body portion 31, and the sealing protrusion 36 is protruding relative to the main body portion 31. The connecting portion 22 of the branch pipe 21 includes a connecting protrusion 222 and a connecting groove 221. The connecting groove 221 is arranged around the connecting protrusion 222. The connecting groove 221 is recessed relative to the end face of the branch pipe 21, and the connecting protrusion 222 is protruding relative to the connecting groove 221. The connecting protrusion 222 is embedded in the sealing groove 321, and the sealing protrusion 36 is embedded in the connecting groove 221, thereby forming a double-layer sealing structure between the branch pipe 21 and the insulating seal 3.

[0060] In some embodiments, with reference to Figure 2 and Figure 8 , the cooling busbar module 20 further comprises a plurality of connectors 7, each connector 8 is connected to two adjacent cooling busbar assemblies 2 to connect two adjacent battery cell groups 10 in series. Wherein the connector 7 can be a copper bar or an aluminum bar or a copper-aluminum composite bar.

[0061] In some embodiments, with reference to Figures 1 to 3 and Figure 9 , the cooling busbar module 20 comprises two busbar end plates 4, which are respectively located at the two ends of the cooling busbar module 20, and the busbar end plate 4 extends along the width direction of the battery, one of the busbar end plates 4 is arranged to connect one end of the plurality of cooling busbar pipes 23, and the other busbar end plate 4 is arranged to connect the other end of the plurality of cooling busbar pipes 23. Wherein the inner cavity of the two busbar end plates 4 is arranged to communicate with the cooling cavity 24 of the plurality of cooling busbar pipes 23 to flow the cooling medium.

[0062] Wherein, the busbar end plate 4 is the main flow channel of the cooling medium, and each cooling busbar pipe 23 is a branch flow channel of the cooling medium, and one of the busbar end plates 4 is provided with an inlet 43 and an outlet 44, the inlet is used for the cooling medium to flow in, and the outlet 44 is used for the cooling medium to flow out.

[0063] In specific embodiments, with reference to Figures 1 to 3 and Figure 8 , the busbar end plate 4 comprises a plate part 41 and a plurality of interface parts 42 connected to the plate part 41, one end of each cooling busbar pipe 23 is sealingly connected to one interface part 42 of one busbar end plate 4, and the other end of each cooling busbar pipe 23 is sealingly connected to one interface part 42 of the other busbar end plate 4. Specifically, the branch pipe 21 of the end part of each cooling busbar pipe 23 is connected to the interface part 42 through an insulating sealing piece 3.

[0064] Wherein, the plurality of interfaces 42 are located on one side of the plate part 41, and the inlet 43 and the outlet 44 are located on the other side of the plate part 41. The plate part 41 has a hollow inner cavity, the interface part 42 is a branch interface, the cooling medium enters the inner cavity of the plate part 41 through the inlet 43, and is provided to the plurality of cooling busbar pipes 23 through the plurality of interface parts 42, the cooling medium flows into one end of the cooling busbar pipe 23 and flows through to the other end of the cooling busbar pipe 23 to provide cooling to the plurality of battery cells 1 of the battery cell group 10, and the cooling medium flows back to one end of the cooling busbar pipe 23 through the inner cavity of the cooling busbar pipe 23 and enters the outlet 44 through the inner cavity of the plate part 41 to flow out.

[0065] In some embodiments, the cooling busbar module 20 further comprises a plurality of fixing bands 5, each of the fixing bands 5 encircles the outer circumferential side of at least one of the busbar end plates 4 and at least one of the cooling busbar pipes 23 to connect the at least one of the busbar end plates 4 and the at least one of the cooling busbar pipes 23. The fixing bands 5 can be steel bands.

[0066] In a specific implementation, each of the fixing bands 5 is used to fix two busbar end plates 4 and at least one cooling busbar pipe 23. The fixing bands 5 are provided as closed rectangular bands, each of the fixing bands 5 is fixed between two busbar end plates 4 and is sleeved on the outer circumferential side of a cooling busbar pipe 23 to fixedly connect the cooling busbar pipe 23 between the two busbar end plates 4, thereby maintaining the stable connection between the cooling busbar pipe 23 and the two busbar end plates 4.

[0067] In some embodiments, the cooling busbar module 20 is arranged on the top end surface 14 of the plurality of battery cell groups 10, and the cooling plate 6 is arranged on the bottom end surface 15 of the plurality of battery cell groups 10, thereby improving the cooling capacity of the battery to meet the working condition of large rate discharge of the battery.

[0068] The cooling busbar pipe 23 is manufactured by a metal material casting process, wherein the cooling busbar pipe 23 is in direct contact with the pole 11 of the battery cell 1 without being provided with a heat-conducting insulating silica gel. Taking the cooling medium as a cooling liquid as an example, the cooling liquid flows in the cooling busbar pipe 23 to cool the plurality of battery cells 1. In order to ensure that the cooling liquid in the cooling busbar pipe 23 can meet the insulation performance for a longer time, after the manufacturing of the cooling busbar pipe 23 is completed, the cooling busbar pipe 23 needs to be fully cleaned with deionized water to remove the metal residues in the cooling busbar pipe 23, and then assembled and sealed in a dust-free room. The cooling liquid is composed of water and ethylene glycol, and thus the cooling liquid itself does not have the electric conductivity.

[0069] The embodiments of the present application also provide a battery pack, which can be an energy storage battery pack or a power battery pack. The energy storage battery pack can be an energy storage container or an energy storage battery cabinet. The battery pack comprises a box body and a plurality of batteries arranged in the box body. The battery comprises the battery provided in the above embodiments.

[0070] The embodiments of the present application also provide a power utilization device, which comprises the above battery pack. The battery pack can provide electric energy for the power utilization device. The power utilization device can be an electric vehicle, a hybrid electric vehicle, or a ship, etc. In some embodiments, the power utilization device is an electric vehicle, which can be a pure electric vehicle, a hybrid electric vehicle, or a range extended vehicle. In other embodiments, the power utilization device can also be other devices, which are not limited here.

[0071] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been described in this article by applying specific examples, the above embodiment explanation is only for helping understanding the method and its core thought of the utility model; simultaneously, for the technical personnel in the art, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above is described, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A cooling busbar module for a battery, the battery comprising multiple cell groups, characterized in that, The cooling busbar module is adapted to electrically connect multiple battery cell groups, and the cooling busbar module is also adapted to contain a cooling medium to cool the multiple battery cell groups.

2. The cooling manifold module according to claim 1, characterized in that, The cooling busbar module further includes multiple cooling busbar components; each battery cell group includes multiple battery cells; wherein each cooling busbar component is adapted to connect multiple battery cells of the corresponding battery cell group in series, and is adapted to contain a cooling medium to cool the multiple battery cells of the battery cell group.

3. The cooling manifold module according to claim 2, characterized in that, Each of the cooling busbars includes two cooling busbars; wherein the two cooling busbars are adapted to connect in series with a plurality of the cells of the cell group and are adapted to contain a cooling medium to cool the plurality of the cells of the cell group.

4. The cooling manifold module according to claim 3, characterized in that, Each of the cooling manifolds includes a plurality of interconnected branch pipes; wherein the plurality of branch pipes of two cooling manifolds are adapted to be connected in series with a plurality of the battery cells of the corresponding battery cell group, and each branch pipe is provided with a cavity to contain a cooling medium.

5. The cooling manifold module according to claim 4, characterized in that, The two cooling manifolds include a first cooling manifold and a second cooling manifold; wherein each branch of the first cooling manifold is connected in series with a branch of the second cooling manifold through a battery cell, and each branch of the second cooling manifold is connected in series with a branch of the first cooling manifold through a battery cell, so that multiple battery cells of the battery cell group are connected in series.

6. The cooling manifold module according to claim 4, characterized in that, The branch pipe is a metal pipe.

7. The cooling manifold module according to claim 4, characterized in that, Each of the cooling manifolds is further provided with multiple insulating seals, each of which is sealed between two adjacent branch pipes and insulates the two adjacent branch pipes from each other.

8. The cooling manifold module according to claim 7, characterized in that, The insulating sealant is a silicone insulating sealant.

9. The cooling manifold module according to claim 2, characterized in that, The cooling busbar module also includes multiple connectors, each of which is connected to two adjacent cooling busbar components to connect two adjacent battery cell groups in series.

10. The cooling manifold module according to claim 2, characterized in that, The cooling manifold module further includes at least one manifold end plate, each of which is adapted to connect to multiple cooling manifold components to circulate cooling medium.

11. The cooling manifold module according to claim 10, characterized in that, At least one of the said manifold end plates is provided with an inlet and an outlet, the inlet being adapted for the inflow of cooling medium and the outlet being adapted for the outflow of cooling medium.

12. The cooling manifold module according to claim 10, characterized in that, The cooling manifold module further includes at least one fixing strap, each of the fixing straps surrounding the outer periphery of at least one end plate and at least one cooling manifold assembly to connect at least one end plate and at least one cooling manifold assembly.

13. A battery, characterized in that, The battery includes multiple cell groups and a cooling busbar module as described in any one of claims 1 to 12, wherein the cooling busbar module is disposed on the end face or side face of the multiple cell groups.

14. The battery according to claim 13, characterized in that, The battery pack includes multiple battery cells, each battery cell includes a terminal, and the cooling busbar module is connected to the terminal.

15. A battery pack, characterized in that, The battery pack includes a housing and a plurality of batteries disposed inside the housing, wherein the batteries are configured as described in claim 13 or 14.

16. An electrical appliance, characterized in that, The electrical equipment includes the battery pack as described in claim 15.

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